CN108403343B - A kind of hospital bed with bending knee function - Google Patents

Abstract

The invention relates to the field of medical instruments. A hospital bed with a knee-bending function comprises a chassis traveling device, a bed board assembly and a knee-bending device on it, the bed board assembly is connected to the chassis traveling device, and the knee-bending device is installed on the bed board assembly. The utility model has the advantages of being able to assist patients to bend their knees, having a reasonable structure and being convenient to use.

Description

A hospital bed with knee bending function

technical field

The invention relates to the field of medical equipment, in particular to a medical bed.

Background technique

Hospital bed is a very widely used medical device. Existing hospital bed adopts the same set of connecting rod system for raising the back and bending the knees. The operation is completed by hand. The function is too simple and the comfort of the patient is poor.

Contents of the invention

The purpose of the present invention is to provide a hospital bed that can assist patients to bend their knees.

In order to achieve the above object, the present invention adopts the following technical solutions: a hospital bed with a knee-bending function, including a chassis traveling device, a bed board assembly and a knee-bending device on it, the bed board assembly is connected to the chassis traveling device, and the knee-bending device is installed on the bed board on the component;

There is a knee-bend control pedal on the chassis traveling device; the bed board assembly includes front and rear baffles, a bed board frame and a fixed crossbeam, the front and rear baffles are fixedly arranged at the end of the bed board frame, and the fixed crossbeam is fixedly arranged on the bed board frame;

The knee bending device includes a second electric push rod, a central rotating shaft, a square tube for elevating the calf board, a thigh resting board, a side bar, a calf resting board, a connecting board for the calf board, a telescopic frame and a rolling wheel; the central rotating shaft is respectively welded with first The connecting ear, the second connecting ear and the third connecting ear, the central pivot shaft is rotatably connected to the bed frame of the bed board assembly; the fixed end of the second electric push rod forms a rotary pair connection with the first load-bearing rod, and the moving end of the second electric push rod It forms a joint connection with the first connecting ear of the central pivot shaft; the round hole at the rear end of the calf plate lifting square tube forms a rotational joint connection with the second connecting ear of the central pivot shaft, and one end of the calf plate connecting plate extends into the calf plate lifting square. A moving pair connection is formed inside the tube, and the other end of the calf plate connecting plate forms a rotating pair connection with the lower leg mounting plate; a rotating pair connection is formed between the thigh mounting plate and the fixed crossbeam of the bed board assembly, and the first rolling wheel is installed on the third connecting ear of the central rotating shaft , the first rolling wheel is in contact with the lower part of the thigh mounting plate, the first rolling wheel rolls along the round tubes at both ends of the thigh mounting plate, the side bar is fixed on the side of the thigh mounting plate, the thigh mounting plate and the calf mounting plate are hinged; the telescopic frame and the calf mounting plate The placement board is movably connected through the moving pair; the second electric push rod is connected with the knee-bending control pedal, and the knee-bending control pedal controls the action of the second electric push rod.

As preferably, a back control pedal is also provided on the chassis traveling device; a back device is also provided on the bed board assembly, and the back device includes a back board, a back board side bar, a track roller, a back frame, a clamping block, a second Three electric push rods, connecting rods and the second rolling wheel; the third electric push rod is connected with the back control pedal, and the back control pedal controls the action of the third electric push rod; the back plate side stop rods are fixedly arranged on both sides of the back plate; There are connecting pins at the bottom of the round tubes on both sides of the back plate, and a plate at the bottom of the back plate. The upper end of the connecting rod is hinged with the plate, and the lower end of the connecting rod is hinged with the first load-bearing rod. The track rollers are fixed on the front end of the plate. The position of the rollers is on the slide rail on the first load-bearing bar; the lifting frame includes a left curved beam and a right curved beam, the tops of the left curved beam and the right curved beam are hinged with the connecting pins of the backboard, and the lower end of the left curved beam is connected to the The clamping block on the first load-bearing rod is hinged, the middle part of the right curved beam is hinged with the clamping block installed on the first load-bearing rod, the bottom of the right curved beam is connected to the movable end of the third electric push rod, and the third electric push rod is fixed The end is connected with the fixed beam through the rotating joint.

A sick bed with a knee-bending function adopts the above-mentioned technical scheme, and the knee-bending device is installed on the bed board assembly, which has the advantages of assisting the patient to bend the knee, reasonable in structure, and easy to use.

Description of drawings

Fig. 1 is a schematic diagram of the explosion of the medical bed of the present invention.

Fig. 2 is a schematic diagram of the exploded structure of the chassis traveling device in the embodiment of the present invention.

Fig. 3 is a schematic diagram of the exploded structure of the bed board lifting device in the embodiment of the present invention.

Fig. 4 is a schematic structural view of the bed board assembly in the embodiment of the present invention.

Fig. 5 is a schematic diagram of the exploded structure of the knee bending device in the embodiment of the present invention.

Fig. 6 is a schematic diagram of the exploded structure of the back lifting device in the embodiment of the present invention.

Detailed ways

The present invention will be further described below in conjunction with FIGS. 1-6 .

A medical bed as shown in FIGS. 1-6 includes a chassis traveling device 1 , a bed board lifting device 2 , a bed board assembly 3 , a knee bending device 4 and a back raising device 5 .

As shown in FIGS. 1 and 2 , the bed board lifting device 2 is installed on the chassis traveling device 1 . The bed board assembly 3 is connected with the bed board lifting device 2 , and the whole bed board of the hospital bed is lifted or lowered by the bed board lifting device 2 . The knee-bending device 4 is connected with the back-lifting device 5 and is installed on the bed board assembly 3 .

The chassis traveling device 1 includes outward wheels 101 , a car lock pedal 102 , a lift control pedal 103 , a back control pedal 104 , a knee bend control pedal 105 , and a chassis frame 109 . There are four outward wheels 101, and the four outward wheels 101 are installed on four corners of the chassis frame 109 respectively. The outer wheels 101 are controlled to be locked or unlocked through the lock pedal 102 . The lifting control pedal 103 is arranged on the chassis frame 109 one, and the back control pedal 104 and the knee bending control pedal 105 are respectively arranged on the chassis frame 109 both sides. The hole seat is welded on the chassis frame 109, which is used to form a rotary pair connection with the bed board lifting device 2.

As shown in FIG. 3 , the bed board lifting device 2 includes a first load-bearing rod 21 , a second load-bearing rod 22 , a hook-shaped lifting arm 23 , a push frame 24 , and a first electric push rod 25 . The first load-bearing rod 21 and the second load-bearing rod 22 are respectively connected with the circular holes c at the upper ends of the four hook-shaped lifting arms 23 , and the upper ends of the first load-bearing rod 21 and the second load-bearing rod 22 are fixedly arranged with the bed board assembly 3 . There is a cylindrical boss b at the turning point of the hook-shaped lifting arm 23, and the cylindrical boss b and the four hole seats of the chassis traveling device 1 respectively form a rotating pair connection, and the hook-shaped lifting arm 23 takes the cylindrical boss b as the rotation center Installed on the chassis traveling device 1 , the bottom end of the hook-shaped lifting arm 23 is provided with a circular hole a and is connected with the two cylindrical shafts d of the push frame 24 to form a rotary pair. The fixed end of the first electric push rod 25 is connected to the chassis traveling device 1 by a rotary pair, and the moving end of the first electric push rod 25 is connected to the central beam of the push frame 24 by a rotary pair. The working principle of the bed board lifting device 2 is: the first electric push rod 25 is used to control the movement of the push frame 24. Since the circular hole a of the hook-shaped lifting arm 23 and the four axes of the cylindrical boss b form a parallelogram, due to the parallelogram principle , when the first electric push rod 25 is extended, the hook-shaped lifting arm 23 is pushed to rotate clockwise around the axis of the cylindrical boss b, and the connection point at the circular hole c rises, passing through the first load-bearing rod 21 and the second load-bearing rod 22 lift the bed board assembly 3 as a whole; on the contrary, when the first electric push rod 25 is shortened, the hook-shaped lifting arm 23 is pushed to rotate counterclockwise around the axis of the cylindrical boss b, and the connection point at the round hole c is lowered, passing through the first The load-bearing rod 21 and the second load-bearing rod 22 lower the bed board assembly 3 as a whole. The first electric push rod is connected with the lifting control pedal, and the lifting control pedal controls the action of the first electric push rod. A set of sliding rails 211 is arranged on the first bearing bar 21 .

As shown in FIG. 4 , the bed board assembly 3 includes front and rear baffles 31 , a bed board frame 32 , a fixed beam 33 , a side push handle 34 and a side installation board 35 . The front and rear baffles 31 are fixedly arranged on the end of the bed frame 32, and the fixed crossbeam 33 is fixedly arranged on the bed frame 32, which plays the role of strengthening and fixing and installing other accessories. The side mounting plate 35 is fixedly arranged under the bed board frame 32 , and the side push handle 34 is fixedly arranged on the side mounting plate 35 . When loading and transporting the sick bed, by pulling up the side push handle 34, the medical staff has a force point on the side to push the sick bed forward, and put it down when not in use. The bed board assembly 3 is arranged on the bed board lifting device 2, and the knee bending device 4 and the back lifting device 5 are installed thereon.

As shown in Figure 5, the knee bending device 4 includes a second electric push rod 41, a central rotating shaft 42, a leg plate lifting square tube 43, a thigh placement plate 44, a side bar 45, a calf placement plate 46, a calf plate connecting plate 47, Telescopic frame 48 and rolling wheel 49. The central pivot shaft 42 is respectively welded with a first connecting ear e, a second connecting ear f and a third connecting ear g, which are used to form a rotating pair connection, and the central pivot rotating shaft 42 is rotatably connected to the bed board frame 32 of the bed board assembly 3; The fixed end of the electric push rod 41 is connected with the first load-bearing rod 21 by a rotating pair, and the moving end of the second electric push rod 41 is connected with the first connecting ear e of the central pivot shaft 42; the rear end of the square tube 43 is lifted by the calf plate The second connecting ear f of the circular hole and the central pivot shaft 42 forms a rotary pair connection, and one end of the calf plate connecting plate 47 stretches into the calf plate lifting square tube 43 to form a mobile pair connection, and the other end of the calf plate connecting plate 47 is connected to the calf placement plate 46 The rotary pair connection is formed below. The thigh resting plate 44 is connected with the fixed crossbeam 33 of the bed board assembly 3 to form a rotating pair, and the first rolling wheel 49 is installed on the third connecting ear g of the central pivot shaft 42, and the first rolling wheel 49 contacts with the lower part of the thigh resting plate 44. The rolling wheel 49 rolls along the round tubes at both ends of the thigh placement plate 44, the side bar 45 is fixed on both sides of the thigh placement plate 44, the thigh placement plate 44 is hinged with the shank placement plate 46; Actively connected, the length of telescopic frame 48 can be freely expanded and contracted. The working principle of the knee bending device 4 is: the second electric push rod is connected to the knee bending control pedal, and the knee bending control pedal controls the action of the second electric push rod. To drive the patient's limbs to achieve the purpose of soothing joints and rehabilitation training. When the second electric push rod 41 is stretched, the first connecting ear e is pushed, so that the central pivot shaft 42 rotates around the axis. The left mounting point rotates counterclockwise to drive the thigh to lift. On the other hand, the second connecting ear f pushes the calf plate to lift the square tube 43, so that the calf resting plate 46 rotates around the left hinge. The bed board assembly 3 and the telescopic frame 48 slide down due to gravity to compensate for the gap; when the second electric push rod 41 shortens, the thigh placement plate 44 and the calf placement plate 46 reset simultaneously.

As shown in Figure 6, the back lifting device 5 comprises a back plate 51, a back plate side bar 52, a track roller 53, a back frame 54, a clamping block 55, a third electric push rod 56, a connecting rod 57 and a second rolling wheel. The third electric push rod 56 is connected with the back control pedal 104 , and the back control pedal 104 controls the action of the third electric push rod 56 . The backboard side bar 52 is fixedly arranged on both sides of the backboard 51 to play a role of safety protection. The bottom of the round tubes on both sides of the backboard 51 is provided with connecting pins 512, the bottom of the backboard 51 is provided with a plate 59, the upper end of the connecting rod 57 is hinged with the plate 59, the lower end of the connecting rod 57 is hinged with the first load-bearing rod 21, and the track roller 53 Fixed on the front end of the plate 59 , the track roller 53 is positioned on the slide rail 211 on the first bearing bar 21 . The back frame 54 includes a left curved beam 541 and a right curved beam 542, the tops of the left curved beam 541 and the right curved beam 542 are hinged with the connecting pin 512 of the backboard 51, and the lower end of the left curved beam 541 is connected with the first load-bearing bar 21. The clamping block 55 on the top is hinged, the middle part of the right curved beam 542 is hinged with the clamping block 55 installed on the first load-bearing rod 21, the bottom of the right curved beam 542 is connected to the movable end of the third electric push rod 56, and the third electric push rod The fixed end of the rod 56 is connected with the fixed beam 33 through a rotating pair.

The working principle of the back device 5 is: powered by the third electric push rod 56, when the movable end of the third electric push rod 56 is the output end stretched, the bottom of the right curved beam 542 is pushed backward to drive the back frame 54 turns, the tops of the left curved beam 541 and the right curved beam 542 push the backboard 51 upwards to lift, while the track rollers 53 slide on the slide rail 211 of the first load-bearing bar 21, further improving the convenience of lifting the backboard 51 , when the movable end of the third electric push rod 56 is shortened, the backboard 51 is reset, and the expansion and contraction of the third electric push rod 56 is controlled by the back control pedal 104. attitude.

Claims (2)

1. a kind of hospital bed with bending knee function, it is characterised in that including chassis moving device, chair assembly and bending knee thereon Device, chair assembly are connected on the moving device of chassis, and bending knee device is mounted on chair assembly；

Chassis moving device is equipped with bending knee control pedal；Chair assembly includes front and rear baffle, bed board frame and fixed cross beam, preceding Rear baffle is fixed at bed board frame ends, and fixed cross beam is fixed on bed board frame；

Device of bending the knee includes the second electric pushrod, maincenter rotation axis, calf plate lifting square tube, thigh setter plate, side block bar, shank Setter plate, calf plate connecting plate, expansion bracket and scroll wheel；Maincenter rotation axis is respectively welded the first engaging lug, the second engaging lug With third engaging lug, maincenter rotation axis is rotatably connected on the bed board frame of chair assembly；Second electric pushrod fixing end and the One bearing bar forms revolute pair connection, forms revolute pair at the second electric pushrod mobile terminal and the first engaging lug of maincenter rotation axis Connection；Calf plate is lifted square tube rear end circular hole and connect with the second engaging lug of maincenter rotation axis formation revolute pair, and calf plate connects Fishplate bar one end, which is protruded into calf plate lifting square tube, forms prismatic pair connection, below the calf plate connecting plate other end and shank setter plate Form revolute pair connection；The fixed cross beam of thigh setter plate and chair assembly forms revolute pair connection, the third of maincenter rotation axis First scroll wheel, the first scroll wheel and thigh setter plate lower contacts are installed, the first scroll wheel is along thigh setter plate on engaging lug Both ends round tube rolls, and side block bar is fixed on thigh setter plate side, and thigh setter plate and shank setter plate are hinged；Expansion bracket with it is small Leg setter plate is flexibly connected by prismatic pair；Second electric pushrod connection bending knee control pedal, bending knee control pedal control second Electric pushrod movement.

2. a kind of hospital bed with bending knee function according to claim 1, it is characterised in that also set on the moving device of chassis There is back lifting control pedal；

Back lifting device is additionally provided on chair assembly, back lifting device includes backboard, backboard side block bar, track roller, plays backrest, clamps Block, third electric pushrod, connecting rod and the second scroll wheel；Third electric pushrod connects back lifting control pedal, back lifting control pedal Control the movement of third electric pushrod；Backboard side block bar is fixed at backboard two sides；Backboard two sides round tube bottom is equipped with company Outbound, backboard bottom are equipped with plate, and connecting rod upper end and plate are hinged, and connecting rod lower end and the first bearing bar are hinged, track rolling Wheel is fixed on the front end of plate, and track roller position is on the sliding rail on the first bearing bar；Rise backrest include left camber beam and The connecting pin of right camber beam, the top and backboard of left camber beam and right camber beam is hinged, the lower end of left camber beam and is mounted on the first bearing bar On gripping block it is hinged, hinged with the gripping block that is mounted on the first bearing bar in the middle part of right camber beam, the bottom of right camber beam connects the The movable end of three electric pushrods, third electric pushrod fixing end are connect by revolute pair with fixed cross beam.